SL1714

SL1714 Quadrature Downconverter Advance Information Supersedes November 1997 issue 1.7 DS4619 - 2.0 April 1998 The SL1714 is a quadrature downconverter, intended primarily for application in professional and consumer digital satellite tuners. The device contains all elements necessary, with the exception of external local oscillator tank to form a complete system operating at standard satellite receiver intermediate frequencies. It is intended for use with external carrier recovery. The device includes a low noise RF input amplifier, a reference VCO with prescaler output buffer and In-phase and Quadrature mixers with baseband buffer amplifiers containing AGC gain control. The SL1714 is optimised to drive a dual ADC converter such as the VP216. The SL1714 utilises a standard MP16 plastic package, the SL1714C a power MH16 plastic package. AGC IOUT VEEA IFINB IFIN IVCCA QOUT VEEC 1 16 VCCB VCODIS VCO B VCO A VEEB PSCAL PSCALB VCCC SL1714 MP16 AGC IOUT VEEA IFINB IFIN IVCCA QOUT VEEC 1 16 FEATURES s Single chip system for wideband quadrature downconversion s Compatible with all standard high IF frequencies s Excellent gain and phase match up to 30MHz baseband s High output referred linearity for low distortion and multi channel application s Simple low component application s Fully balanced low radiation design with fully integrated quadrature generation s High operating input sensitivity s On-board AGC facility s On chip oscillator for varactor tuning or SAW resonator ...